Locking device for nuts and bolts and the like



Feb. 12, 1929. 1,701,511

r M. A. SISK LOCKING DEVICE FOR NUTS AND BOLTS AND THE LIKE 1 Filed Aug.13, 1926 mvsmon with the tongues of the sleeve.

Patented Feb. 12, 1929.

UNITED STATES:

PATENT OFFICE.

MARTiN VA. SISK, or rirrssunen, PENNSYLVANIA.

LOCKING DEVICE FOR NUTS AND Bo'IiTs AND .THE LIKE.

Appiication filed- August, 13, 1926. Serial No. 128,972.

Among the'objects which I have in view is the provision oi an improvedmeans for preventing accidental relative rotation 'between a belt or thelike and a nut which will I provide. an adjustment member or sleevewhich slips down over the outer end of the bolt into engagement with thenut to prevent relative rotationbetween the sleeve and the nut, theinner end of the sleeve in the. embodiment shown in the accompanyingdrawings being provided'with means interlocking with the nut, such astongues, which fit into the corresponding seats of the nut to hold thenut and sleeve againstrelative rotary movement, while the outer end ofthe sleeve is provided with a seat oian' annuiar'series of seats w'ththe proper one of which a registering .lreyleg is bent down inengagement to lock the'sleeve" to the bolt. v

registration between one of the sleeve seats and the key the said'seatsare offset to progressively increa [extents relative to'the tonguesoithe ve. This effect may be accoiupiished by providing the sleeve witha seat or seats properly offset fron alinement ,1 Thus 'a sleeve withbut oneofiset would by proper adjustment of its position relative to thenut double the number of locking positions of which the device iscapable. By providing the sleeve with a plurality of. seats the lockingpositions will be multiplied accordingly. For instance, the use of asleeve with fivelocking seats in combination with a nut havingsixlocking seats would. provide thirty-six locking posi tions includingthe six available'bythe use of the nut without thesleevel 3 i I Vvariousinethods of engaging the inner end oi the key with the inner endof the nut,

end of the nut;

Another object which I have in View is the will To insure receivedvseatto prevent outward'Inovement of the key relative to the nut, may beemployed. I preferto provide the inner end of the key with an annularportionjor ring whichis more advantageously a splitring and whichsurrounds the bolt and bears against theinner However, theinner end oithe key may simply be bent outwardly to engage the inner end of the nut,the inner end of the nut being in such cases. countersunk'to receive theinner end of the key.

Other novel features of construction, and also of arrangementofparts'will appear from the following descriptirmf r 1 In theaccompanying drawings, wherein I have illustrated the best embodiment ofthe principles of my invention now known to me, Fig. 1 is an elevationshowing a nut lo'cke'd on a bolt; Fig.- 2 is a plan view of the same;Fig.3 is an enlarged perspective of the'sleeve; F i apersp'ective ofthepreferred form of locking key, and. Fig.5 is a diagrammatic view showingthe relation between the seats in the sleeve and theseats in the nut, gI a i r Referring to the drawings, A is the bolt, B the nut, G the keyand; D the locking sleeve. Thebolt A is provided witha longitudinally.disposed groove *1 intersecting its threaded portion and in-the drawingsthe outer end of the nut Bis shown provided a with an annular seriesofradially disposed seats 2, said seats being preferably equally'.-';pacedf apart and,separated by the shoulders 5. I I

The i Y C has a straight leg 4; whi-rh is" in the slot 1 of the bolt andthe inner end portion. of the key is formed to engage the inner endofthenut to prevent the key, accidentally slipping from place;

Thus .I have shown a ring 5 integralwith the inner end of the key whichsurrounds the bolt A and bears" againstthe inner end of the nut.

Where the sleeve D is not employed, when the nut has been screwed up,the outer pro.-

truding end of the key is bent outw radially of the boltlinto engagementw. one of the seats 2 of the nut,

hen my improved locking sleeve'is used the end of the keywhich protrudespast thesleeve is bent. over into engagement there- The locking sleeveis. provided atone m ted with the nut 13 n such po bring the sleeve seatwhich has the necesend with means whereby it may be engaged with the nutso as to prevent relative rotat1on between the same.

Thus the inner end of the sleeve may be provided with spaced aparttongues e prei erably equal in number withv the seats 2 of the nut andadapted to'interlock therewith when the sleeve is in place on the bolt,as shown in Fig. 1. The tongues 6 are preterably slightly tapered towardtheir free ends to facilitate such. interlocking.

The outer end of the sleeve D is shown provided with a series of sunkenseats, in dicated at 7, 7 7 7 and 7, with the registerii'ig one of wlill the leg a of the key C is bent down into engagement, as shown inFig. 1.

The sleeve D may be provi d ed with but a single seat 7 offsetl'romalinement with a tongue 6, and by properly adjusting the sleeverelative to the nut the number of positions of the nut in which it maybe locked will be doubled, the sleeve being positioned is used incombination with the nut and when the sleeve protrudes past the end ofthe bolt.

It will be understood that where extra locking strength is required ordesired, two or more keys or key legs may be arranged to simultaneouslyregister and interlock with seats of the nut or sleeve.

Vi hat Idesir'e to claim is 1. In a nut and bolt locking device, thecombination with a bolt having a longitudinally disposed grooveintersecting its threaded portion and a nut having its outer endprovided with an annular series of radially disposed seats, a sleeveadapted to he slipped on over the outer end of the 7 bolt and arrangedto'interlock with the nut relative to the nut so that its seat may be.

offset from any one of the nut seats to the proper degree to bring thesleeve seat into registration with the key.

However, I prefer to provide the sleeve with a plurality of seats, eachseat having a diii'erent offsetting, as illustrated in v5. Thus, asshown by the graduations and dotted center lines, when the sleeve andnut are mated in the relative position indicated in Fig. 5, the sleeveseat, 7 is offset one point from the nut seat 2, and may be offset to alike amount from any of the other nut seats by turning the sleeve intothe proper position before mating. Likewise the seat 7 is offset twopoints; the seat 7 three points; the seat 12 four points, and the seat 7five points.

Thus when the nut/B has been screwed into its properly adjusted positionand none of its locking seats is in registration with the key, thesleeve 1) is then installed and ion as to sary offset value intoregistration with the key, and the key is then bent down into lockingengagement with said sleeve seat.

The leg 4 of thekey is preferably notched as at 8 to facilitate itsbending and straightening at the same point.

The. material of the sleeve D should be of sufficient ua e to revent itsenterin bet: t: h

tween the nut and the bolt and to enable it to bear on the outer end ofthe nut and to mate firmly therewith.

to prevent relative rotation bet-ween the nut and the sleeve, the outerend of thesleeve being provided with a seat offset to prevent alinementwith the seats of the nut, and a key having its body received in thegroove and having its outer end, after the nut and sleeve are adjustedon the bolt, bent radial ly oi' the bolt into engagement with the seatoithe sleeve.

2. in a nut and bolt locking device, the

combination with a bolt having alongitu- .lly disposed grooveintersecting its threaded portion and a nut having its outer endprovided with an annular series of radially disposed seats, a sleeveadapted to he slipped onover the outer end of the bolt and arranged tointerlock with the nut to prevent relative rotation between the nut andthe sleeve, the outer end of the sleeve being provided with aseries'ot'seats progressively offset to prevent alinement with the seatsofthenut so that said sleeve may be adjusted relative to the nut tobring one of the sleeve seats tion with the bolt groove, and a keyhaving its body received in the groove and its outer end protruding pastthe sleeve, when the nut and sleevehave been adjusted into position,being bent radiallyo't'the bolt into engagement with the registeringsleeve seat. i

g 3. ln-a nut and bolt locking device, the combination with a bolthaving a longitudinally disposed groove intersecting its threadedportion'anda nut having its outer end provided with an annular series ofradially disposed seats, a sleeve adapt-ed to be slipped on over theouter end of the bolt and arranged to interlock with the nut to preventrelative rotation between the nut and the sleeve, the outer end of thesleeve into registrabeing provided with a seat offset to prevent Ialinement with the seats of the nut, and

a key having its body received in the groove and having its outer ,end,after the nut and sleeve are adjusted on the bolt, bent radially of thebolt into engagement with the seat of the sleeve, the inner end of thekey be ing provided withan outwardly projecting radially disposedvseats, a sleeve adapted'to.

be slipped on over the outer end of the bolt and arranged to interlockwith the nut to prevent relative rotation between the nut and the sieeve, the outer end of the sleeve being provided with a series of sunkenseats progressively offset to prevent I alineinent withtheseats of thenut so that said sleeve may be adjusted relative to the nut soas tobring one of the sleeve seats into registra.

tion with the bolt groove,,and a key having its body received in thegroove and its outer end protruding past the sleeve, when the nut andsleeve have been adjusted into position, being bent radially of the boltinto engagement with the registering sleeve seat,

the inner end of the key being provided with an outwardlyprojeetingtportion which bears against the inner end 0 the nut.

5. In a nut and bolt locking device, the combination with a boltprovided with a key-way, a nut screwed on said bolt, of a sleeve slippedon the outer end of the bolt and engaged with the nut to prevent rela stive rotation between the nut and the sleeve,

and a key in said key -way and engaging the sleeve to prevent relativerotation between the sleeve and the, bolt.

6. In a nut and bolt locking device, the

combination with a bolt provided with a key-way, a. nut screwed on saidbolt, of

a sleeve slipped on the outer end of the bolt and engaged with the nutto prevent rela tive rotation between the nut and the sleeve, saidsleeve being provided with a plurality of key seats, and a key in saidkey-way and engaging one of said seats to prevent relative rotation.between the bolt and the sleeve. i

7. In a nutand bolt locking device, the 7 combination with a boltprovided with a key-way, a nut screwed on said bolt, of a sleeve slippedon theouter end of the bolt and, engaged with the nut to preventrelative rotation between the nut and the sleeve,

the outer end of said sleeve being providedwith a concentricallyarranged series of seats, and a key in said key-way and'engaging one ofsaid; seats to prevent relative rotationbetween the sleeve and the bolt.I I i 8. In a nut and bolt locking device, the combination with a boltand a nut screwed on said bolt, or" a sleeve on the outer end, of thebolt and engaged with the nut to prevent relative rotationin eitherdirection between the nut and the sleeve, and a member detachablyengaging said sleeve and said bolt to prevent relative movementtherebetween.

Signed at Pittsburgh, Pa., this 12th day of August, 1926.

MARTINv A; SISK.

CERTIFICATE OF RRECTION.

Patent No. 1,701,511. Granted February 12, 1929, to

MARTIN A. SISK.

It is hereby certified that error appears in the above numbered patentrequiring correction as follows: in the drawing, Figure 2, at the topright for the reference numeral "7c" read "7e"; page 2, line 34, afterthe word "seat" strike out the comma, and line 40, for the referencenumeral "12d" read "7d"; and that the said Letters Patent should be readwith these corrections therein that the same may conform to the recordof the case in the Patent Office.

Signed and sealed this 19th day of March, A. D. 1929.

M. J. Moore, (Seal) Acting Commissioner of Patents.

